On Friday, the producers said: "Toy Show the Musical's world-famous casting director Maureen Hughes (Once, The Butcher Boy, Love/Hate, RAW, Charlie) is looking for the lead role - a character called Nell.
"Nell is a bright and brilliant 12-year-old girl with a wonderful spirit and great singing and dancing skills.
"Auditionees should be between the ages of 11-16 with a playing age of 12-years-old.
"The application process is very straightforward. Record a short video, fill in the application form and hit 'submit'.
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"In your video, we would love to see you singing a verse and chorus of a song of your choice. Can you also introduce the video by telling us a bit about yourself (include any experience you might have in singing, acting, dancing, playing an instrument) or if you have any interesting hobbies/party pieces?"
Successful applicants will be shortlisted for an in-person audition in June in Dublin. There, they will perform a monologue or short poem and be asked to sing.
To apply, visit: www.rte.ie/toyshowthemusical.
The closing date for video submissions is midnight on Friday, 3 June.
Toy Show The Musical runs at the Auditorium at the Convention Centre, Dublin from Saturday, 10 December. Tickets, priced from €25, are on sale now.